Hello everyone, Im pretty new around here my name is Clement Derisbourg and I hope my question will not sound too dumb. I recently had a 747 v3 and I handle it as best as I can but I have an issue with my FMC i configured it normally with my route, departure airport arrival airport runways ... but my aircraft at one stage let say I'm level FL15 at waypoint A , and need to descend level FL10 at waypoint, well my aircraft will stay stuck at level FL15 but the speeds chance lets say i'm 250 at WP A and asked for 220 at WP B it will change. I dont know what I configured incorrectly. If you guys have any idea dont hesitate to let me know. Cheers Clement.